Got my Q6600 G-0 to boot 3.6GHz (400x9) on my unmodded BX2 with the latest BIOS and Vista SP1 RC installed. 3.51 was my previous best on this board with that chip.

http://valid.x86-secret.com/show_oc.php?id=288859

http://img227.imageshack.us/img227/5...x9q6600wb8.jpg

I'll report back if I can get it to hold under Prime.